package cn.exrick.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * 短信工具
 */
@Component
public class SMSUtil {
    private String url = "http://39.105.78.67:18002/send.do";
    @Value("${sms.uid}")
    private String uid;
    @Value("${sms.pw}")
    private String pw;
    @Value("${sms.ua}")
    private String ua;

    public SMSUtil(){}

    public SMSUtil(String uid,String pw){
        this.uid = uid;
        this.pw = pw;
    }

    public static void main(String args[]){
        new SMSUtil("6758","948642").sendSms("18650021838","【测试】你的验证码是:xxxxx");
    }

    public boolean sendSms(String phone, String content) {
        String tm = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
        String pw = MD5.hex_md5(this.pw + tm).toLowerCase();
        Map<String, String> params = new HashMap<>();
        params.put("ua", this.ua);
        params.put("pw", pw);
        params.put("mb", phone);
        params.put("ms", content);
        params.put("tm", tm);
        String result = sendPost(url, params);

        /**
         * 接口请求错误时  返回值 例：-1
         * 请求成功时 返回值，消息编号  例：0,112223115540
         */
        String[] resultArray = result.split(",");

        return resultArray.length > 1;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url    发送请求的 URL
     * @param params 请求的参数集合
     * @return 远程资源的响应结果
     */
    private static String sendPost(String url, Map<String, String> params) {
        OutputStreamWriter out = null;
        BufferedReader in = null;
        StringBuilder result = new StringBuilder();
        try {
            URL realUrl = new URL(url);
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // POST方法
            conn.setRequestMethod("POST");
//            // 设置通用的请求属性
//            conn.setRequestProperty("accept", "*/*");
//            conn.setRequestProperty("connection", "Keep-Alive");
//            conn.setRequestProperty("user-agent",
//                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
//            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            conn.connect();
            // 获取URLConnection对象对应的输出流
            out = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
            // 发送请求参数
            if (params != null) {
                StringBuilder param = new StringBuilder();
                for (Map.Entry<String, String> entry : params.entrySet()) {
                    if (param.length() > 0) {
                        param.append("&");
                    }
                    param.append(entry.getKey());
                    param.append("=");
                    param.append(entry.getValue());
                    //System.out.println(entry.getKey()+":"+entry.getValue());
                }
                //System.out.println("param:"+param.toString());
                out.write(param.toString());
            }
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(), "UTF-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result.append(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result.toString();
    }
}
